Art of inhibiting rust formation



1 mm 25 394' J. D. MORGAN 2,230,004

ART OF INHIBITING RUST FORMATION Filed April '23, 1958 INVENTOR JOHN D. MORGA N BYE ATTORNEY Patented Jan. 28, 1941 2,230,004

UNITED STATES PATENT OFFICE ART OF INHIBITING RUST FORMATION John D. Morgan, South Orange, N. J assignor to Power Pateiits Company, Hillside, N. J., a corporation of Maine Application April 23, 1938, Serial No. 203,800 1 Claim. (Cl: 210-31) The present invention relates to a dispenser, used in the apparatus. Particularly effective are and more particularly to a dispenser suited for the chromate and dichromate salts such as sodisupplying chemically treated water into the radium and potassium dichromate. The bottle I is ator of an automobile. held in inverted position by a funnel shaped sup- For many years, one serious difficulty in the port I2 which is mounted on a small vessel H 5 operation and servicing of automobiles has been into which the solution flows from bottle Ill. The the problem of corrosion and rusting of parts of vessel 14 is supported on a tubing member IS the radiator and cooling systems, which is due to which telescopes into a length of hollow tubing the corrosive action of the water put into the I8 which is fixed in a weighted base 20. A wing 10 radiator. While many chemical treating inhibset screw 22 holds tubing 16 at any desired 10 itors and anti-rust agents have been put on the height. The rust inhibitor flows from the vesmarket, so far as I am aware no suitable or acsel ll through a horizontal conduit 28, into a curate apparatus for adding such anti-rust agent chamber 28. The level of the rust inhibitor soto the radiator water has been put in use. Herelution in the chamber 28 will always be at the 115 tofore service station attendants have been inlevel maintained in vessel I because of the postructed to pour the anti-rust agent directly into sition of the mouth of the bottle H). The chamthe radiator of the car, which might result in her 28 is provided with a drain cock 30 for samthe correct amount being mixed with the water, p g 0 for cleaning t pp but is more often apt to result in having too much The water to be supplied to the car radiator 20 put in with resulting loss and waste. By this is preferably drawn from a pressure main, as for 20 method also too little might be put in with the example through a line 32, provided with a conresult that no benefits would accrue, ti'ol valve 34, and passed at considerable velocity The primary object of the present invention is through a Conduit Section 35 tontaining & v nto provide an apparatus by which water flowing turi, in which a predetermined proportion of the through a hose prior to its introduction into an Solution from chamber 28 is mixed with the 25 automobile radiator will be combined with on stream f w Th r in mix ure is c nanti-rust agent at a predetermined ratio. ducted from the conduit section 38 through suit- Another object of the invention is to avoid any able pipe onnections 52.- a section of flexible necessity of measuring either the amount of wa- 11058 and a h t O a 0 -1 ad or 58,

ter or the amount of the anti-rust agent intm- The structural connections between the Conduit" 30 duced into a car radiator, section 38 and chamber 28 are shown in enlarged Accordingly, an important feature of the presdetail in Figure 2 0 the'dmwing, in which it i l out invention is an apparatus adapted to supply be noted that chamber 28 isprovided with a cap a predetermined proportion of a chemical treat- 40 to which the conduitsection 88 is mounted ing agent or rust inhibitor preferably in solution; and welded. The venturi in the conduit section 351 to a stream of water being delivered to a car radi- 38 may comprise an insert such was 88. The soluator, and to utilize the stream of water to draw tion from the-chamber 28 is drawn into the venthe chemical from a holder therefor. turi 38 through a suction tube 42 provided with With the above and other objects and features a port 58 of predetermined relatively small' diamfill in view the invention comprises an improved diseter. One end of the suction tube extends below 40 penser which is hereinafter described and more t e liquid level in the chamber 28 and the other particularly defined in the accompanying claim. end extends centrally thr p 9, the conduit The invention can best be understood from the 36, and the venturi 38. The suction tube 42 is following description taken in connection with provided with a shoulder 46 and is secured firmly the drawing in which: in the desired position by means of a lock nut 44. .45

Figure 1 is a. side view of the apparatus. The suction tube 82 is sealed with respect to the Figure 2 is an enlarged cross-sectional view of cw 0 by means of a gasket l8 which rests on a part of the apparatus. shoulder 08. The nut 44 is preferably put on Figure 3 is a top plan view of the structure over a clamping bracket 45 that is welded to 59 shown in Figure 2. cap 48.

Referring to Figure 1, a bottle l0 serves as a The suction tube 42 is set in the Venturi secstorage reservoir for the rust inhibitor solution to tion 38 with the port 50 on the downstream side be introduced into the car'radiator with water of the Venturi throat, so that the suction caused from a water supply main. Any standard or by the water passing through the venturi .will commercially acceptable rust inhibitor can be draw solution from the chamber 28 through the 55 suction tube 42 and the port 50. The location of the port 50 on the axis of the conduit 36 will provide the maximum proportion of solution in the water for the car radiator. If the port 50 is set either to the right or left of the axis of the conduit 36, the proportion of the solution drawn from the chamber 38 will be reduced accordingly. The top of the suction conduit 42 is of course sealed off, as for example with a Welded cap, and is preferably provided with an arrow-shaped groove 60 pointing to the position of the port 50, as shown for example in Figure 3. The port 50 therefore can be placed in any position to give the desired proportion of anti-rust solution by merely loosening the nut 44 andxturning the suction tube 42 to the desired position by means of a screw driver, and-again tightening the nut 44.

In the operation of the apparatus valve 34 is opened causing a flow of water under pressure through conduit 36 and venturi 38. This will create a suction based on the rate of flow of the water, and this suction working against a constant liquid level in the chamber 28 will draw a definite proportion of rust inhibitor solution from container 28 through the suction tube 42 and port 50 into the flowing stream of water in the conduit 36. The resulting mixture containing the desired proportion of inhibitor is passed into the car radiator.

The apparatus described in connection with the present invention is particularly suited for providing rust inhibited water for maintaining the water in car radiators in a condition to prevent rust formation. Where a car radiator is initially filled with rust inhibiting water in accordance with the features of the present invention, the water in the car radiator may be readily maintained free from rust frmation by regular additions of rust inhibited ater as loss from vaporization and other causesimay occur.

Even the addition of rust inhibited water to untreated wa-ter in a car radiator will give some protection against rust formation. In these cases there is also an improvement in the anti-rust condition in the car radiator and cooling system. On the other hand the addition of hard water and uninhibited water to a car radiator containing anti-rust treated water will decrease the ef fectiveness of the treating agent and often cause precipitation of undesirable constituents.

When the apparatus is used in cold weather, it may be necessary to add an amount of antifreeze, such as alcohol, to the rust inhibitor so lution to prevent the freezing thereof. be the case,.port 50 can-be so' positioned as to permit a relatively larger proportion of inhibitor solution to be drawn into the flowing stream of water for the car radiator.

Having thus described the invention, what is claimed as new is:

An apparatus for delivering a proportional mixture of two liquids comprising, a chamber for holding one liquid, means for maintaining a constant level of liquid in said chamber, a pipewith a Venturi throat through which the other liquid flows, means for controlling the flow of the liquid through the Venturi throat, a suction tube extending from-below the liquid level of the constant level chamber upwardly into the Venturi throat of the pipe, a port in the portion of the suction tube extending into the Venturi throat 50 arranged that by suction alone liquid is drawn up through the tube and mixed with other liquid in the Venturi throat, said suction tube being adjustable to vary the position of the port with respect to the longitudinal axis of the Venturi and thereby vary the proportional ratio of the two liquids, and means for indicating the proportional ratio of the liquid mixture.

1 JOHN D. MORGAN.

If this 

